./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c558e00c0dd9b5f4cf40cba6e03e276a996696c71c282947f4c8d13390dc25bf --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:48:05,642 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:48:05,718 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:48:05,723 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:48:05,725 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:48:05,749 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:48:05,750 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:48:05,750 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:48:05,751 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:48:05,751 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:48:05,752 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:48:05,752 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:48:05,753 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:48:05,755 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:48:05,755 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:48:05,756 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:48:05,756 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:48:05,756 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:48:05,757 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:48:05,757 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:48:05,757 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:48:05,762 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:48:05,762 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:48:05,763 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:48:05,763 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:48:05,763 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:48:05,763 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:48:05,764 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:48:05,764 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:48:05,764 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:48:05,764 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:48:05,764 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:48:05,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:48:05,765 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:48:05,766 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:48:05,766 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:48:05,767 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:48:05,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:48:05,768 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:48:05,768 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:48:05,768 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:48:05,769 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:48:05,769 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c558e00c0dd9b5f4cf40cba6e03e276a996696c71c282947f4c8d13390dc25bf [2024-11-19 01:48:06,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:48:06,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:48:06,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:48:06,078 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:48:06,079 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:48:06,081 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2024-11-19 01:48:07,501 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:48:07,718 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:48:07,719 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2024-11-19 01:48:07,730 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/961ca89da/814f3fa12a8943cfba306a568e2d9f7e/FLAG68c6dfbe6 [2024-11-19 01:48:07,746 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/961ca89da/814f3fa12a8943cfba306a568e2d9f7e [2024-11-19 01:48:07,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:48:07,751 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:48:07,754 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:48:07,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:48:07,760 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:48:07,761 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:48:07" (1/1) ... [2024-11-19 01:48:07,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63e45a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:07, skipping insertion in model container [2024-11-19 01:48:07,762 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:48:07" (1/1) ... [2024-11-19 01:48:07,787 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:48:07,990 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c[2249,2262] [2024-11-19 01:48:07,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:48:08,003 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:48:08,041 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c[2249,2262] [2024-11-19 01:48:08,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:48:08,059 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:48:08,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:08 WrapperNode [2024-11-19 01:48:08,060 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:48:08,061 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:48:08,061 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:48:08,061 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:48:08,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:08" (1/1) ... [2024-11-19 01:48:08,075 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:08" (1/1) ... [2024-11-19 01:48:08,091 INFO L138 Inliner]: procedures = 18, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2024-11-19 01:48:08,092 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:48:08,092 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:48:08,092 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:48:08,093 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:48:08,111 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:08" (1/1) ... [2024-11-19 01:48:08,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:08" (1/1) ... [2024-11-19 01:48:08,114 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:08" (1/1) ... [2024-11-19 01:48:08,125 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 01:48:08,125 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:08" (1/1) ... [2024-11-19 01:48:08,125 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:08" (1/1) ... [2024-11-19 01:48:08,129 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:08" (1/1) ... [2024-11-19 01:48:08,134 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:08" (1/1) ... [2024-11-19 01:48:08,139 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:08" (1/1) ... [2024-11-19 01:48:08,139 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:08" (1/1) ... [2024-11-19 01:48:08,141 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:48:08,142 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:48:08,142 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:48:08,142 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:48:08,143 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:08" (1/1) ... [2024-11-19 01:48:08,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:48:08,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:48:08,179 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 01:48:08,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 01:48:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:48:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:48:08,225 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:48:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:48:08,225 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:48:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:48:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:48:08,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:48:08,228 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:48:08,325 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:48:08,328 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:48:08,535 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:48:08,536 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:48:08,682 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:48:08,682 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 01:48:08,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:48:08 BoogieIcfgContainer [2024-11-19 01:48:08,686 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:48:08,688 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:48:08,689 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:48:08,691 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:48:08,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:48:07" (1/3) ... [2024-11-19 01:48:08,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7972c4e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:48:08, skipping insertion in model container [2024-11-19 01:48:08,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:48:08" (2/3) ... [2024-11-19 01:48:08,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7972c4e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:48:08, skipping insertion in model container [2024-11-19 01:48:08,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:48:08" (3/3) ... [2024-11-19 01:48:08,695 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2024-11-19 01:48:08,709 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:48:08,709 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:48:08,710 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:48:08,775 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 01:48:08,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 32 transitions, 78 flow [2024-11-19 01:48:08,847 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-11-19 01:48:08,847 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:48:08,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 4/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 55 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-11-19 01:48:08,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 32 transitions, 78 flow [2024-11-19 01:48:08,857 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 29 transitions, 70 flow [2024-11-19 01:48:08,873 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:48:08,888 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@30b6a58d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:48:08,888 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-19 01:48:08,906 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:48:08,907 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-19 01:48:08,907 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:48:08,907 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:08,908 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:08,909 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:08,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:08,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1272295163, now seen corresponding path program 1 times [2024-11-19 01:48:08,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:08,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828176513] [2024-11-19 01:48:08,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:48:08,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:48:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:09,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:09,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828176513] [2024-11-19 01:48:09,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828176513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:48:09,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:48:09,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:48:09,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677046372] [2024-11-19 01:48:09,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:48:09,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:48:09,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:09,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:48:09,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:48:09,332 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-19 01:48:09,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:09,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:09,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-19 01:48:09,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:09,457 INFO L124 PetriNetUnfolderBase]: 146/286 cut-off events. [2024-11-19 01:48:09,457 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-19 01:48:09,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 286 events. 146/286 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1137 event pairs, 12 based on Foata normal form. 1/254 useless extension candidates. Maximal degree in co-relation 458. Up to 186 conditions per place. [2024-11-19 01:48:09,465 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 21 selfloop transitions, 7 changer transitions 1/40 dead transitions. [2024-11-19 01:48:09,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 40 transitions, 159 flow [2024-11-19 01:48:09,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:48:09,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:48:09,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-19 01:48:09,478 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-11-19 01:48:09,480 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 70 flow. Second operand 3 states and 69 transitions. [2024-11-19 01:48:09,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 40 transitions, 159 flow [2024-11-19 01:48:09,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 40 transitions, 145 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 01:48:09,515 INFO L231 Difference]: Finished difference. Result has 31 places, 33 transitions, 101 flow [2024-11-19 01:48:09,523 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=31, PETRI_TRANSITIONS=33} [2024-11-19 01:48:09,533 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2024-11-19 01:48:09,533 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 33 transitions, 101 flow [2024-11-19 01:48:09,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:09,534 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:09,534 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:09,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:48:09,536 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:09,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:09,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2086242437, now seen corresponding path program 1 times [2024-11-19 01:48:09,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:09,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417998908] [2024-11-19 01:48:09,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:48:09,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:48:09,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:09,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:09,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417998908] [2024-11-19 01:48:09,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417998908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:48:09,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:48:09,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:48:09,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053077375] [2024-11-19 01:48:09,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:48:09,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:48:09,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:09,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:48:09,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:48:09,792 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 01:48:09,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 33 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:09,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:09,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 01:48:09,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:10,001 INFO L124 PetriNetUnfolderBase]: 191/376 cut-off events. [2024-11-19 01:48:10,001 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-11-19 01:48:10,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 376 events. 191/376 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1753 event pairs, 20 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 276. Up to 143 conditions per place. [2024-11-19 01:48:10,008 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 36 selfloop transitions, 10 changer transitions 5/65 dead transitions. [2024-11-19 01:48:10,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 65 transitions, 290 flow [2024-11-19 01:48:10,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:48:10,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:48:10,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-11-19 01:48:10,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7375 [2024-11-19 01:48:10,012 INFO L175 Difference]: Start difference. First operand has 31 places, 33 transitions, 101 flow. Second operand 5 states and 118 transitions. [2024-11-19 01:48:10,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 65 transitions, 290 flow [2024-11-19 01:48:10,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 65 transitions, 281 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:48:10,016 INFO L231 Difference]: Finished difference. Result has 37 places, 40 transitions, 155 flow [2024-11-19 01:48:10,017 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=37, PETRI_TRANSITIONS=40} [2024-11-19 01:48:10,017 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2024-11-19 01:48:10,018 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 155 flow [2024-11-19 01:48:10,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:10,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:10,018 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:10,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:48:10,019 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:10,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:10,019 INFO L85 PathProgramCache]: Analyzing trace with hash 414343881, now seen corresponding path program 2 times [2024-11-19 01:48:10,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:10,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368675908] [2024-11-19 01:48:10,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:48:10,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:10,053 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:48:10,057 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:10,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:10,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:10,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368675908] [2024-11-19 01:48:10,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368675908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:48:10,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:48:10,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:48:10,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874386995] [2024-11-19 01:48:10,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:48:10,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:48:10,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:10,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:48:10,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:48:10,170 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 01:48:10,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:10,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:10,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 01:48:10,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:10,302 INFO L124 PetriNetUnfolderBase]: 185/391 cut-off events. [2024-11-19 01:48:10,303 INFO L125 PetriNetUnfolderBase]: For 231/231 co-relation queries the response was YES. [2024-11-19 01:48:10,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 391 events. 185/391 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1863 event pairs, 12 based on Foata normal form. 8/367 useless extension candidates. Maximal degree in co-relation 345. Up to 88 conditions per place. [2024-11-19 01:48:10,308 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 35 selfloop transitions, 12 changer transitions 4/65 dead transitions. [2024-11-19 01:48:10,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 65 transitions, 348 flow [2024-11-19 01:48:10,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:48:10,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:48:10,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-11-19 01:48:10,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-11-19 01:48:10,311 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 155 flow. Second operand 5 states and 115 transitions. [2024-11-19 01:48:10,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 65 transitions, 348 flow [2024-11-19 01:48:10,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 65 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 01:48:10,316 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 241 flow [2024-11-19 01:48:10,316 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=241, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2024-11-19 01:48:10,317 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2024-11-19 01:48:10,317 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 241 flow [2024-11-19 01:48:10,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:10,318 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:10,318 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:10,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:48:10,318 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:10,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:10,319 INFO L85 PathProgramCache]: Analyzing trace with hash -844618454, now seen corresponding path program 1 times [2024-11-19 01:48:10,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:10,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626723596] [2024-11-19 01:48:10,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:48:10,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:48:10,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:10,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:10,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626723596] [2024-11-19 01:48:10,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626723596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:48:10,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:48:10,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:48:10,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801471920] [2024-11-19 01:48:10,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:48:10,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:48:10,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:10,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:48:10,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:48:10,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 01:48:10,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:10,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:10,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 01:48:10,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:10,590 INFO L124 PetriNetUnfolderBase]: 182/379 cut-off events. [2024-11-19 01:48:10,590 INFO L125 PetriNetUnfolderBase]: For 588/588 co-relation queries the response was YES. [2024-11-19 01:48:10,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1172 conditions, 379 events. 182/379 cut-off events. For 588/588 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1837 event pairs, 17 based on Foata normal form. 2/347 useless extension candidates. Maximal degree in co-relation 572. Up to 163 conditions per place. [2024-11-19 01:48:10,594 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 41 selfloop transitions, 9 changer transitions 2/66 dead transitions. [2024-11-19 01:48:10,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 66 transitions, 436 flow [2024-11-19 01:48:10,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:48:10,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:48:10,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-11-19 01:48:10,596 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-19 01:48:10,596 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 241 flow. Second operand 5 states and 112 transitions. [2024-11-19 01:48:10,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 66 transitions, 436 flow [2024-11-19 01:48:10,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 66 transitions, 432 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-19 01:48:10,606 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 292 flow [2024-11-19 01:48:10,607 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2024-11-19 01:48:10,608 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 19 predicate places. [2024-11-19 01:48:10,609 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 292 flow [2024-11-19 01:48:10,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:10,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:10,609 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:10,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:48:10,611 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:10,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:10,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1900226788, now seen corresponding path program 2 times [2024-11-19 01:48:10,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:10,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658273876] [2024-11-19 01:48:10,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:48:10,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:10,632 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:48:10,632 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:10,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:10,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:10,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658273876] [2024-11-19 01:48:10,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658273876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:48:10,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:48:10,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:48:10,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560361011] [2024-11-19 01:48:10,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:48:10,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:48:10,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:10,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:48:10,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:48:10,712 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 01:48:10,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:10,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:10,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 01:48:10,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:10,840 INFO L124 PetriNetUnfolderBase]: 168/379 cut-off events. [2024-11-19 01:48:10,841 INFO L125 PetriNetUnfolderBase]: For 793/793 co-relation queries the response was YES. [2024-11-19 01:48:10,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1162 conditions, 379 events. 168/379 cut-off events. For 793/793 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1730 event pairs, 6 based on Foata normal form. 17/361 useless extension candidates. Maximal degree in co-relation 751. Up to 99 conditions per place. [2024-11-19 01:48:10,845 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 43 selfloop transitions, 12 changer transitions 1/70 dead transitions. [2024-11-19 01:48:10,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 512 flow [2024-11-19 01:48:10,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:48:10,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:48:10,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-11-19 01:48:10,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.70625 [2024-11-19 01:48:10,847 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 292 flow. Second operand 5 states and 113 transitions. [2024-11-19 01:48:10,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 512 flow [2024-11-19 01:48:10,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 496 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-19 01:48:10,853 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 355 flow [2024-11-19 01:48:10,853 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=355, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-11-19 01:48:10,854 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2024-11-19 01:48:10,854 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 355 flow [2024-11-19 01:48:10,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:10,854 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:10,855 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:10,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:48:10,855 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:10,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:10,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1926277624, now seen corresponding path program 1 times [2024-11-19 01:48:10,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:10,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886309891] [2024-11-19 01:48:10,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:48:10,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:48:11,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:11,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:11,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886309891] [2024-11-19 01:48:11,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886309891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:48:11,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507584328] [2024-11-19 01:48:11,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:48:11,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:11,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:48:11,102 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:48:11,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:48:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:48:11,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 01:48:11,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:48:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:11,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:48:11,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:11,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507584328] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:48:11,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:48:11,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-11-19 01:48:11,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787593068] [2024-11-19 01:48:11,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:48:11,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:48:11,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:11,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:48:11,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:48:11,751 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-19 01:48:11,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 355 flow. Second operand has 12 states, 12 states have (on average 14.833333333333334) internal successors, (178), 12 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:11,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:11,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-19 01:48:11,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:12,391 INFO L124 PetriNetUnfolderBase]: 459/907 cut-off events. [2024-11-19 01:48:12,391 INFO L125 PetriNetUnfolderBase]: For 2614/2614 co-relation queries the response was YES. [2024-11-19 01:48:12,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3200 conditions, 907 events. 459/907 cut-off events. For 2614/2614 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4403 event pairs, 4 based on Foata normal form. 46/883 useless extension candidates. Maximal degree in co-relation 1278. Up to 254 conditions per place. [2024-11-19 01:48:12,401 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 105 selfloop transitions, 51 changer transitions 0/165 dead transitions. [2024-11-19 01:48:12,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 165 transitions, 1356 flow [2024-11-19 01:48:12,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 01:48:12,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-19 01:48:12,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 355 transitions. [2024-11-19 01:48:12,404 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5838815789473685 [2024-11-19 01:48:12,405 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 355 flow. Second operand 19 states and 355 transitions. [2024-11-19 01:48:12,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 165 transitions, 1356 flow [2024-11-19 01:48:12,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 165 transitions, 1317 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-11-19 01:48:12,415 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 848 flow [2024-11-19 01:48:12,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=848, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2024-11-19 01:48:12,418 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 52 predicate places. [2024-11-19 01:48:12,418 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 848 flow [2024-11-19 01:48:12,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.833333333333334) internal successors, (178), 12 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:12,418 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:12,418 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:12,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 01:48:12,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-19 01:48:12,623 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:12,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:12,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1028412545, now seen corresponding path program 2 times [2024-11-19 01:48:12,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:12,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281470324] [2024-11-19 01:48:12,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:48:12,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:12,649 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:48:12,650 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:12,784 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 01:48:12,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:12,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281470324] [2024-11-19 01:48:12,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281470324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:48:12,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:48:12,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:48:12,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012300195] [2024-11-19 01:48:12,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:48:12,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:48:12,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:12,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:48:12,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:48:12,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 01:48:12,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 848 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:12,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:12,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 01:48:12,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:13,119 INFO L124 PetriNetUnfolderBase]: 882/1760 cut-off events. [2024-11-19 01:48:13,121 INFO L125 PetriNetUnfolderBase]: For 8920/8954 co-relation queries the response was YES. [2024-11-19 01:48:13,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7205 conditions, 1760 events. 882/1760 cut-off events. For 8920/8954 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11364 event pairs, 205 based on Foata normal form. 6/1535 useless extension candidates. Maximal degree in co-relation 6507. Up to 534 conditions per place. [2024-11-19 01:48:13,142 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 98 selfloop transitions, 32 changer transitions 0/162 dead transitions. [2024-11-19 01:48:13,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 162 transitions, 2001 flow [2024-11-19 01:48:13,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:48:13,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:48:13,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-11-19 01:48:13,143 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7578125 [2024-11-19 01:48:13,144 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 848 flow. Second operand 4 states and 97 transitions. [2024-11-19 01:48:13,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 162 transitions, 2001 flow [2024-11-19 01:48:13,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 162 transitions, 1866 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-11-19 01:48:13,174 INFO L231 Difference]: Finished difference. Result has 86 places, 113 transitions, 1292 flow [2024-11-19 01:48:13,174 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1292, PETRI_PLACES=86, PETRI_TRANSITIONS=113} [2024-11-19 01:48:13,174 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 54 predicate places. [2024-11-19 01:48:13,175 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 113 transitions, 1292 flow [2024-11-19 01:48:13,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:13,175 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:13,175 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:13,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:48:13,175 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:13,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:13,176 INFO L85 PathProgramCache]: Analyzing trace with hash -545213543, now seen corresponding path program 1 times [2024-11-19 01:48:13,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:13,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673715357] [2024-11-19 01:48:13,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:48:13,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:48:13,306 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:48:13,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:13,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673715357] [2024-11-19 01:48:13,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673715357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:48:13,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:48:13,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:48:13,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043199150] [2024-11-19 01:48:13,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:48:13,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:48:13,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:13,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:48:13,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:48:13,311 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 01:48:13,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 113 transitions, 1292 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:13,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:13,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 01:48:13,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:13,739 INFO L124 PetriNetUnfolderBase]: 1255/2864 cut-off events. [2024-11-19 01:48:13,739 INFO L125 PetriNetUnfolderBase]: For 22071/22402 co-relation queries the response was YES. [2024-11-19 01:48:13,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13527 conditions, 2864 events. 1255/2864 cut-off events. For 22071/22402 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 21903 event pairs, 317 based on Foata normal form. 36/2717 useless extension candidates. Maximal degree in co-relation 11490. Up to 703 conditions per place. [2024-11-19 01:48:13,779 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 190 selfloop transitions, 21 changer transitions 0/244 dead transitions. [2024-11-19 01:48:13,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 244 transitions, 3438 flow [2024-11-19 01:48:13,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:48:13,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:48:13,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-11-19 01:48:13,780 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.765625 [2024-11-19 01:48:13,780 INFO L175 Difference]: Start difference. First operand has 86 places, 113 transitions, 1292 flow. Second operand 4 states and 98 transitions. [2024-11-19 01:48:13,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 244 transitions, 3438 flow [2024-11-19 01:48:13,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 244 transitions, 3425 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-19 01:48:13,837 INFO L231 Difference]: Finished difference. Result has 91 places, 132 transitions, 1614 flow [2024-11-19 01:48:13,837 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1614, PETRI_PLACES=91, PETRI_TRANSITIONS=132} [2024-11-19 01:48:13,838 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 59 predicate places. [2024-11-19 01:48:13,839 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 132 transitions, 1614 flow [2024-11-19 01:48:13,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:13,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:13,839 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:13,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 01:48:13,840 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:13,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:13,840 INFO L85 PathProgramCache]: Analyzing trace with hash 937487598, now seen corresponding path program 1 times [2024-11-19 01:48:13,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:13,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550897344] [2024-11-19 01:48:13,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:48:13,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:48:14,090 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:48:14,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:14,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550897344] [2024-11-19 01:48:14,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550897344] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:48:14,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141857426] [2024-11-19 01:48:14,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:48:14,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:14,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:48:14,094 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:48:14,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:48:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:48:14,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 01:48:14,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:48:14,236 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:48:14,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:48:14,329 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:48:14,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141857426] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:48:14,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:48:14,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-19 01:48:14,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699905376] [2024-11-19 01:48:14,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:48:14,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:48:14,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:14,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:48:14,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:48:14,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-19 01:48:14,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 132 transitions, 1614 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:14,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:14,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-19 01:48:14,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:15,321 INFO L124 PetriNetUnfolderBase]: 2632/5745 cut-off events. [2024-11-19 01:48:15,322 INFO L125 PetriNetUnfolderBase]: For 39658/39767 co-relation queries the response was YES. [2024-11-19 01:48:15,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27216 conditions, 5745 events. 2632/5745 cut-off events. For 39658/39767 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 46016 event pairs, 401 based on Foata normal form. 22/5588 useless extension candidates. Maximal degree in co-relation 23537. Up to 2538 conditions per place. [2024-11-19 01:48:15,403 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 252 selfloop transitions, 19 changer transitions 1/303 dead transitions. [2024-11-19 01:48:15,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 303 transitions, 4365 flow [2024-11-19 01:48:15,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:48:15,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:48:15,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-11-19 01:48:15,406 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.78125 [2024-11-19 01:48:15,406 INFO L175 Difference]: Start difference. First operand has 91 places, 132 transitions, 1614 flow. Second operand 5 states and 125 transitions. [2024-11-19 01:48:15,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 303 transitions, 4365 flow [2024-11-19 01:48:15,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 303 transitions, 4365 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 01:48:15,518 INFO L231 Difference]: Finished difference. Result has 96 places, 144 transitions, 1723 flow [2024-11-19 01:48:15,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1723, PETRI_PLACES=96, PETRI_TRANSITIONS=144} [2024-11-19 01:48:15,519 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 64 predicate places. [2024-11-19 01:48:15,519 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 144 transitions, 1723 flow [2024-11-19 01:48:15,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:15,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:15,520 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:15,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 01:48:15,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-19 01:48:15,725 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:15,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:15,726 INFO L85 PathProgramCache]: Analyzing trace with hash -796004310, now seen corresponding path program 2 times [2024-11-19 01:48:15,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:15,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841715356] [2024-11-19 01:48:15,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:48:15,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:15,761 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:48:15,761 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:15,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:15,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841715356] [2024-11-19 01:48:15,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841715356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:48:15,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659297465] [2024-11-19 01:48:15,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:48:15,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:15,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:48:15,941 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:48:15,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:48:16,006 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:48:16,006 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:16,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 01:48:16,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:48:16,093 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:16,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:48:16,178 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:16,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659297465] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:48:16,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:48:16,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-19 01:48:16,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338979975] [2024-11-19 01:48:16,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:48:16,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:48:16,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:16,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:48:16,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:48:16,188 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-19 01:48:16,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 144 transitions, 1723 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:16,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:16,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-19 01:48:16,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:17,687 INFO L124 PetriNetUnfolderBase]: 3542/7904 cut-off events. [2024-11-19 01:48:17,688 INFO L125 PetriNetUnfolderBase]: For 57721/57926 co-relation queries the response was YES. [2024-11-19 01:48:17,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39482 conditions, 7904 events. 3542/7904 cut-off events. For 57721/57926 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 68666 event pairs, 511 based on Foata normal form. 35/7792 useless extension candidates. Maximal degree in co-relation 34326. Up to 4063 conditions per place. [2024-11-19 01:48:17,792 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 273 selfloop transitions, 26 changer transitions 1/331 dead transitions. [2024-11-19 01:48:17,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 331 transitions, 4756 flow [2024-11-19 01:48:17,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:48:17,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:48:17,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-11-19 01:48:17,795 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7552083333333334 [2024-11-19 01:48:17,795 INFO L175 Difference]: Start difference. First operand has 96 places, 144 transitions, 1723 flow. Second operand 6 states and 145 transitions. [2024-11-19 01:48:17,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 331 transitions, 4756 flow [2024-11-19 01:48:18,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 331 transitions, 4702 flow, removed 27 selfloop flow, removed 0 redundant places. [2024-11-19 01:48:18,021 INFO L231 Difference]: Finished difference. Result has 103 places, 162 transitions, 1882 flow [2024-11-19 01:48:18,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1882, PETRI_PLACES=103, PETRI_TRANSITIONS=162} [2024-11-19 01:48:18,023 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 71 predicate places. [2024-11-19 01:48:18,023 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 162 transitions, 1882 flow [2024-11-19 01:48:18,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:18,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:18,024 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:18,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 01:48:18,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:18,225 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:18,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:18,225 INFO L85 PathProgramCache]: Analyzing trace with hash -11283622, now seen corresponding path program 3 times [2024-11-19 01:48:18,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:18,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569892985] [2024-11-19 01:48:18,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:48:18,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:18,263 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 01:48:18,263 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:18,485 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:18,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:18,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569892985] [2024-11-19 01:48:18,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569892985] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:48:18,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258850029] [2024-11-19 01:48:18,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:48:18,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:18,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:48:18,488 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:48:18,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 01:48:18,552 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 01:48:18,552 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:18,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 01:48:18,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:48:18,631 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:18,631 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:48:18,720 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:18,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258850029] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:48:18,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:48:18,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-19 01:48:18,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800552297] [2024-11-19 01:48:18,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:48:18,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:48:18,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:18,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:48:18,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:48:18,733 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-19 01:48:18,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 162 transitions, 1882 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:18,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:18,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-19 01:48:18,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:20,509 INFO L124 PetriNetUnfolderBase]: 5131/11391 cut-off events. [2024-11-19 01:48:20,510 INFO L125 PetriNetUnfolderBase]: For 84959/85262 co-relation queries the response was YES. [2024-11-19 01:48:20,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57076 conditions, 11391 events. 5131/11391 cut-off events. For 84959/85262 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 104748 event pairs, 642 based on Foata normal form. 64/11198 useless extension candidates. Maximal degree in co-relation 49036. Up to 4108 conditions per place. [2024-11-19 01:48:20,611 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 336 selfloop transitions, 37 changer transitions 1/405 dead transitions. [2024-11-19 01:48:20,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 405 transitions, 5882 flow [2024-11-19 01:48:20,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:48:20,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:48:20,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-11-19 01:48:20,613 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2024-11-19 01:48:20,613 INFO L175 Difference]: Start difference. First operand has 103 places, 162 transitions, 1882 flow. Second operand 6 states and 152 transitions. [2024-11-19 01:48:20,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 405 transitions, 5882 flow [2024-11-19 01:48:20,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 405 transitions, 5872 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-11-19 01:48:20,854 INFO L231 Difference]: Finished difference. Result has 109 places, 175 transitions, 2057 flow [2024-11-19 01:48:20,854 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2057, PETRI_PLACES=109, PETRI_TRANSITIONS=175} [2024-11-19 01:48:20,854 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 77 predicate places. [2024-11-19 01:48:20,854 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 175 transitions, 2057 flow [2024-11-19 01:48:20,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:20,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:20,855 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:20,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 01:48:21,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:21,055 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:21,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:21,056 INFO L85 PathProgramCache]: Analyzing trace with hash 665613642, now seen corresponding path program 1 times [2024-11-19 01:48:21,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:21,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548358744] [2024-11-19 01:48:21,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:48:21,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:48:21,174 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:21,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:21,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548358744] [2024-11-19 01:48:21,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548358744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:48:21,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:48:21,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:48:21,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242471247] [2024-11-19 01:48:21,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:48:21,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:48:21,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:21,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:48:21,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:48:21,181 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 01:48:21,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 175 transitions, 2057 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:21,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:21,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 01:48:21,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:22,640 INFO L124 PetriNetUnfolderBase]: 5211/11377 cut-off events. [2024-11-19 01:48:22,640 INFO L125 PetriNetUnfolderBase]: For 91936/92054 co-relation queries the response was YES. [2024-11-19 01:48:22,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57691 conditions, 11377 events. 5211/11377 cut-off events. For 91936/92054 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 104133 event pairs, 962 based on Foata normal form. 126/11113 useless extension candidates. Maximal degree in co-relation 49559. Up to 4043 conditions per place. [2024-11-19 01:48:22,751 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 176 selfloop transitions, 32 changer transitions 0/262 dead transitions. [2024-11-19 01:48:22,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 262 transitions, 3372 flow [2024-11-19 01:48:22,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:48:22,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:48:22,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-11-19 01:48:22,752 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7265625 [2024-11-19 01:48:22,752 INFO L175 Difference]: Start difference. First operand has 109 places, 175 transitions, 2057 flow. Second operand 4 states and 93 transitions. [2024-11-19 01:48:22,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 262 transitions, 3372 flow [2024-11-19 01:48:23,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 262 transitions, 3291 flow, removed 26 selfloop flow, removed 1 redundant places. [2024-11-19 01:48:23,067 INFO L231 Difference]: Finished difference. Result has 113 places, 164 transitions, 1954 flow [2024-11-19 01:48:23,067 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1850, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1954, PETRI_PLACES=113, PETRI_TRANSITIONS=164} [2024-11-19 01:48:23,068 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 81 predicate places. [2024-11-19 01:48:23,068 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 164 transitions, 1954 flow [2024-11-19 01:48:23,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:23,068 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:23,069 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:23,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 01:48:23,069 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:23,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:23,069 INFO L85 PathProgramCache]: Analyzing trace with hash 605443538, now seen corresponding path program 4 times [2024-11-19 01:48:23,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:23,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068564627] [2024-11-19 01:48:23,070 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:48:23,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:23,090 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:48:23,090 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:23,256 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:23,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:23,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068564627] [2024-11-19 01:48:23,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068564627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:48:23,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601574595] [2024-11-19 01:48:23,258 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:48:23,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:23,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:48:23,260 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:48:23,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 01:48:23,330 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:48:23,330 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:23,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 01:48:23,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:48:23,420 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:23,421 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:48:23,509 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:23,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601574595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:48:23,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:48:23,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-19 01:48:23,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344767911] [2024-11-19 01:48:23,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:48:23,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:48:23,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:23,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:48:23,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:48:23,522 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-19 01:48:23,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 164 transitions, 1954 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:23,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:23,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-19 01:48:23,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:25,064 INFO L124 PetriNetUnfolderBase]: 4801/10939 cut-off events. [2024-11-19 01:48:25,065 INFO L125 PetriNetUnfolderBase]: For 98023/98266 co-relation queries the response was YES. [2024-11-19 01:48:25,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58980 conditions, 10939 events. 4801/10939 cut-off events. For 98023/98266 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 101799 event pairs, 641 based on Foata normal form. 58/10835 useless extension candidates. Maximal degree in co-relation 49895. Up to 7229 conditions per place. [2024-11-19 01:48:25,144 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 211 selfloop transitions, 27 changer transitions 1/271 dead transitions. [2024-11-19 01:48:25,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 271 transitions, 3777 flow [2024-11-19 01:48:25,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:48:25,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:48:25,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-11-19 01:48:25,145 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7625 [2024-11-19 01:48:25,145 INFO L175 Difference]: Start difference. First operand has 113 places, 164 transitions, 1954 flow. Second operand 5 states and 122 transitions. [2024-11-19 01:48:25,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 271 transitions, 3777 flow [2024-11-19 01:48:25,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 271 transitions, 3777 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 01:48:25,348 INFO L231 Difference]: Finished difference. Result has 120 places, 184 transitions, 2231 flow [2024-11-19 01:48:25,348 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1954, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2231, PETRI_PLACES=120, PETRI_TRANSITIONS=184} [2024-11-19 01:48:25,349 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 88 predicate places. [2024-11-19 01:48:25,349 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 184 transitions, 2231 flow [2024-11-19 01:48:25,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:25,349 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:25,349 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:25,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 01:48:25,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 01:48:25,550 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:25,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:25,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1459912018, now seen corresponding path program 5 times [2024-11-19 01:48:25,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:25,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553586168] [2024-11-19 01:48:25,551 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:48:25,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:25,578 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 01:48:25,578 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:25,905 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:25,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:25,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553586168] [2024-11-19 01:48:25,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553586168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:48:25,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87053703] [2024-11-19 01:48:25,906 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:48:25,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:25,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:48:25,910 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:48:25,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 01:48:25,979 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 01:48:25,979 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:25,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 01:48:25,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:48:26,075 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:26,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:48:26,171 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:26,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87053703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:48:26,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:48:26,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 8 [2024-11-19 01:48:26,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864451885] [2024-11-19 01:48:26,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:48:26,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:48:26,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:26,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:48:26,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:48:26,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-19 01:48:26,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 184 transitions, 2231 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:26,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:26,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-19 01:48:26,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:28,134 INFO L124 PetriNetUnfolderBase]: 5896/13356 cut-off events. [2024-11-19 01:48:28,134 INFO L125 PetriNetUnfolderBase]: For 126885/127284 co-relation queries the response was YES. [2024-11-19 01:48:28,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73853 conditions, 13356 events. 5896/13356 cut-off events. For 126885/127284 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 126724 event pairs, 499 based on Foata normal form. 143/13303 useless extension candidates. Maximal degree in co-relation 63111. Up to 4977 conditions per place. [2024-11-19 01:48:28,239 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 321 selfloop transitions, 68 changer transitions 1/422 dead transitions. [2024-11-19 01:48:28,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 422 transitions, 6337 flow [2024-11-19 01:48:28,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:48:28,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 01:48:28,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-11-19 01:48:28,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75390625 [2024-11-19 01:48:28,240 INFO L175 Difference]: Start difference. First operand has 120 places, 184 transitions, 2231 flow. Second operand 8 states and 193 transitions. [2024-11-19 01:48:28,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 422 transitions, 6337 flow [2024-11-19 01:48:28,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 422 transitions, 6323 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-11-19 01:48:28,571 INFO L231 Difference]: Finished difference. Result has 130 places, 203 transitions, 2631 flow [2024-11-19 01:48:28,571 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2217, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2631, PETRI_PLACES=130, PETRI_TRANSITIONS=203} [2024-11-19 01:48:28,572 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 98 predicate places. [2024-11-19 01:48:28,572 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 203 transitions, 2631 flow [2024-11-19 01:48:28,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:28,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:28,572 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:28,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 01:48:28,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:28,773 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:28,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:28,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1719315824, now seen corresponding path program 6 times [2024-11-19 01:48:28,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:28,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10814850] [2024-11-19 01:48:28,774 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:48:28,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:28,802 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 01:48:28,802 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:28,938 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:28,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:28,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10814850] [2024-11-19 01:48:28,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10814850] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:48:28,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093819151] [2024-11-19 01:48:28,939 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:48:28,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:28,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:48:28,941 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:48:28,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 01:48:29,112 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 01:48:29,112 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:29,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 01:48:29,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:48:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:29,198 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:48:29,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:29,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093819151] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:48:29,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:48:29,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-19 01:48:29,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10338032] [2024-11-19 01:48:29,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:48:29,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:48:29,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:29,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:48:29,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:48:29,288 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-19 01:48:29,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 203 transitions, 2631 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:29,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:29,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-19 01:48:29,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:32,180 INFO L124 PetriNetUnfolderBase]: 8219/18789 cut-off events. [2024-11-19 01:48:32,181 INFO L125 PetriNetUnfolderBase]: For 193991/194718 co-relation queries the response was YES. [2024-11-19 01:48:32,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107083 conditions, 18789 events. 8219/18789 cut-off events. For 193991/194718 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 188074 event pairs, 950 based on Foata normal form. 116/18636 useless extension candidates. Maximal degree in co-relation 90537. Up to 8918 conditions per place. [2024-11-19 01:48:32,340 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 387 selfloop transitions, 38 changer transitions 1/458 dead transitions. [2024-11-19 01:48:32,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 458 transitions, 7126 flow [2024-11-19 01:48:32,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:48:32,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:48:32,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-11-19 01:48:32,341 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2024-11-19 01:48:32,341 INFO L175 Difference]: Start difference. First operand has 130 places, 203 transitions, 2631 flow. Second operand 6 states and 152 transitions. [2024-11-19 01:48:32,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 458 transitions, 7126 flow [2024-11-19 01:48:32,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 458 transitions, 7060 flow, removed 33 selfloop flow, removed 0 redundant places. [2024-11-19 01:48:33,063 INFO L231 Difference]: Finished difference. Result has 138 places, 227 transitions, 2952 flow [2024-11-19 01:48:33,063 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2583, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2952, PETRI_PLACES=138, PETRI_TRANSITIONS=227} [2024-11-19 01:48:33,063 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 106 predicate places. [2024-11-19 01:48:33,064 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 227 transitions, 2952 flow [2024-11-19 01:48:33,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:33,064 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:33,066 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:33,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 01:48:33,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:33,271 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:33,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:33,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1332834541, now seen corresponding path program 1 times [2024-11-19 01:48:33,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:33,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874023993] [2024-11-19 01:48:33,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:48:33,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:48:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:33,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:33,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874023993] [2024-11-19 01:48:33,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874023993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:48:33,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:48:33,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:48:33,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227689394] [2024-11-19 01:48:33,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:48:33,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:48:33,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:33,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:48:33,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:48:33,482 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 01:48:33,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 227 transitions, 2952 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:33,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:33,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 01:48:33,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:34,807 INFO L124 PetriNetUnfolderBase]: 3388/8036 cut-off events. [2024-11-19 01:48:34,807 INFO L125 PetriNetUnfolderBase]: For 96200/97008 co-relation queries the response was YES. [2024-11-19 01:48:34,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47334 conditions, 8036 events. 3388/8036 cut-off events. For 96200/97008 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 73551 event pairs, 422 based on Foata normal form. 242/8089 useless extension candidates. Maximal degree in co-relation 41712. Up to 2506 conditions per place. [2024-11-19 01:48:34,871 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 165 selfloop transitions, 21 changer transitions 0/259 dead transitions. [2024-11-19 01:48:34,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 259 transitions, 3877 flow [2024-11-19 01:48:34,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:48:34,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:48:34,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-11-19 01:48:34,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7265625 [2024-11-19 01:48:34,872 INFO L175 Difference]: Start difference. First operand has 138 places, 227 transitions, 2952 flow. Second operand 4 states and 93 transitions. [2024-11-19 01:48:34,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 259 transitions, 3877 flow [2024-11-19 01:48:35,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 259 transitions, 3831 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-11-19 01:48:35,042 INFO L231 Difference]: Finished difference. Result has 142 places, 198 transitions, 2631 flow [2024-11-19 01:48:35,044 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2560, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2631, PETRI_PLACES=142, PETRI_TRANSITIONS=198} [2024-11-19 01:48:35,044 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 110 predicate places. [2024-11-19 01:48:35,044 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 198 transitions, 2631 flow [2024-11-19 01:48:35,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:35,045 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:35,045 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:35,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 01:48:35,045 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:48:35,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:35,046 INFO L85 PathProgramCache]: Analyzing trace with hash -612926834, now seen corresponding path program 7 times [2024-11-19 01:48:35,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:35,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637800970] [2024-11-19 01:48:35,046 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:48:35,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:48:35,340 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:35,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:35,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637800970] [2024-11-19 01:48:35,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637800970] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:48:35,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591330087] [2024-11-19 01:48:35,341 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:48:35,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:35,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:48:35,343 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:48:35,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 01:48:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:48:35,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 01:48:35,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:48:35,792 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:35,792 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:48:47,485 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:48:47,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591330087] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:48:47,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:48:47,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 22 [2024-11-19 01:48:47,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172308776] [2024-11-19 01:48:47,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:48:47,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 01:48:47,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:47,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 01:48:47,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=346, Unknown=2, NotChecked=0, Total=462 [2024-11-19 01:48:47,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-19 01:48:47,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 198 transitions, 2631 flow. Second operand has 22 states, 22 states have (on average 16.363636363636363) internal successors, (360), 22 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:47,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:47,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-19 01:48:47,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:57,549 WARN L286 SmtUtils]: Spent 8.46s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-19 01:49:11,126 WARN L286 SmtUtils]: Spent 12.26s on a formula simplification. DAG size of input: 53 DAG size of output: 49 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-19 01:49:15,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-19 01:49:29,757 WARN L286 SmtUtils]: Spent 8.17s on a formula simplification. DAG size of input: 54 DAG size of output: 51 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-19 01:49:31,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-19 01:49:35,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.41s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []